The 2017 typically asks 49% less than the 2020 in this snapshot, across 3 model years.
The 2016 Cadillac CT6 asks about 49% less than the 2020 across 4 model years — the curve below tracks every year from 2020 to 2016, priced from 421 live dealer listings.
These are current dealer asking prices for different vehicles, not a forecast, original MSRP comparison or final sale prices. Mileage, trim, condition and generation changes can affect the gap. No qualified five-model-year price gap is highlighted. The table shows the available years, prices and sample sizes.
◷ Updated September 10, 2026 ▤ National asking prices, refreshed daily
19% of the 2020 price
Across the 2016–2020 model years, 2020 → 2019 is the biggest single-model-year asking-price step in this sample.
Priced from 45 and 66 live listings.
Typical asking price by model year, newest on the left — labels compare asking prices with the 2020. Hover a point for that year's price band.
A 2016 Cadillac CT6 typically lists at $18,900 — 49% below the 2020's $36,995.
| Year | Typical price | Share of baseline ask | vs. next-newer year | Avg. mileage | Listings |
|---|---|---|---|---|---|
| 2020 | $36,995 | 100% | — | 67,050 | 45 |
| 2019 | $29,897 | 81% | −$7,098 | 78,825 | 66 |
| 2018 | $23,417 | 63% | −$6,480 | 86,482 | 106 |
| 2017 | $18,771 | 51% | −$4,646 | 96,629 | 109 |
| 2016 | $18,900 | 51% | +$129 | 100,598 | 95 |
Typical price is the median (or average when the median is unavailable) asking price of that model year's live dealer listings, national. Share of baseline ask is each year's asking price as a percentage of the newest year's asking price in the same group of available model years. Updated September 10, 2026.
This snapshot does not measure annual depreciation of one car. The 2016 typically asks $18,900, 49% below the 2020's $36,995. These are different vehicles listed on September 10, 2026; mileage, trim, condition and redesigns can affect the difference.
A 2016 Cadillac CT6 asks about 51% of the 2020's typical asking price ($18,900 vs $36,995). The “Share of baseline ask” column in the table above shows the same share for every model year in between.
The 2017 Cadillac CT6 is the most affordable model year we track, typically listed at $18,771. Compare every year in the table above.
This depreciation curve covers 5 model years, from 2016 to 2020, each priced from live dealer listings and refreshed daily.
Check individual VINs before you buy — decode the exact trim and mileage, see every active listing, and how each price compares to the local market.
